Do you know all the classes of medicinal product recalls- and how you're expected to respond?

The MHRA categorises product defects into four recall classes, ranging from critical (Class 1) to (Class 4). Each has a different level of urgency and response requirement — and not all involve physically recalling a product.

Classes of UK Medicinal Product Recalls & Notifications

The UK MHRA uses a four-tiered system to classify defects in medicines and determine the appropriate regulatory response:

Class	Definition	Examples	Action Required
Class 1 Recall (Most Serious)	The product poses a life-threatening or serious risk to health.	Contamination with harmful substances, incorrect strength of active ingredient, or a labelling error that could lead to serious health consequences.	Immediate recall from all levels, including patients, pharmacies, and hospitals. Use of press releases and direct communication to reach the public. Urgent Field Safety Notice (FSN) and notification to healthcare professionals.
Class 2 Recall (Less Urgent, but Still Significant)	The product could pose a risk to health, but it's not immediately life-threatening.	Minor contamination, stability issues, or labelling errors with less severe consequences.	Recall from pharmacies and wholesalers. Notification to healthcare professionals and patients where appropriate. Completion of recall usually within 48 hours.
Class 3	The product is unlikely to cause harm, but the recall is a precautionary measure.	Slight packaging issues, minor deviations from marketing authorisation.	Targeted recall, often from wholesalers only. Carried out within 5 days.
Class 4	The product does not require a recall, but there’s a need to provide additional information to healthcare professionals.	Incorrect patient information leaflets, minor labelling errors.	Issue a Caution in Use letter or notification. No removal from supply chain, but healthcare professionals are advised on appropriate action (e.g., checking with the manufacturer or giving verbal guidance to patients).

How to Respond to a Product Recall

For Healthcare Professionals / Pharmacists:

·       Read and act on the Drug Alert or Field Safety Notice.

·       Identify affected stock and quarantine it.

·       Stop supplying or dispensing the product.

·       Inform patients, if required.

·       Follow MHRA and manufacturer instructions on return or destruction.

·       Keep records of all actions taken.

For Wholesalers:

·       Stop distribution of affected batches immediately.

·       Quarantine stock.

·       Inform customers and arrange return.

·       Maintain full traceability records.

For Patients:

·       If contacted, stop using the product if advised.

·       Follow instructions from your pharmacist or doctor.

·       Return the product if required.

·       Seek medical advice if you experience adverse effects.